Use Debug::hex instead of reinterpret_cast<void*>().

This finally fixes most of those annoying MSVC C4312 warnings about
conversion to a type of a greater size.

src/Magnum/Test/VersionTest.cpp

@@ -46,7 +46,7 @@ void VersionTest::test() {
     Debug{} << "MAGNUMBINDINGS_VERSION_MONTH:" << MAGNUMBINDINGS_VERSION_MONTH;
     #ifdef MAGNUMBINDINGS_VERSION_COMMIT
     Debug{} << "MAGNUMBINDINGS_VERSION_COMMIT:" << MAGNUMBINDINGS_VERSION_COMMIT;
-    Debug{} << "MAGNUMBINDINGS_VERSION_HASH:" << reinterpret_cast<void*>(MAGNUMBINDINGS_VERSION_HASH);
+    Debug{} << "MAGNUMBINDINGS_VERSION_HASH:" << Debug::hex << MAGNUMBINDINGS_VERSION_HASH;
     Debug{} << "MAGNUMBINDINGS_VERSION_STRING:" << MAGNUMBINDINGS_VERSION_STRING;
     #else
     Debug{} << "No Git version information available.";